Paper-bag machine.



PATENTED MAR.'12, 1.907.

Nol 347,191.

W. A. LORENZ. y PAPER. BAG MACHINE.

l APPLICATION FILED o0T.5. 1900.

6 SHEETS-SHEET 1. v

Inventor:

l/nes'ses: Jus 615%@ f 7% No. 847,191. EATENTEDMAE. 12,1907.

w. A. LORENZ. PAPER EAG MACHINE.

` AYPLIOATIONIILED 00125* 1900.

Witnesses: Inventor:

PATBNTED MAR. 12, 1907.

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. x, Illcl" Inventor:

l T/Vitnesses:

PATENTED MAR. l2. 1907.

W. A. LORENZ.

' PAPER BAG MAHINE.

APPLIOATIOHPILED 00T.5. 1900.

SHEETS-SHEET 5.

Inventor:

Witwe-sse s:

JM M4 @T PATENTED MAR. l2,- 1907.

I' W. A. LoRE'Nz.

.PAPER BAG MAGHINE.

APPLICATION FILED 00T.5, 1900.

s SHEETS-SHEET 6 Wzltn e sses:

UNITED sTATEs APATEivi oEEicE..

WILLIAM A. LORENZ, OF HARTFORD, CONNECTICU'I, ASSIGNOR TO UNION PAPER-BAG MACHINE COMPANY, OF PHILADELPHIA, PENNSYLVANIA,

` A CORPORATION OF PENNSYLVANIA. 4

' PAPER-BAGMACHINE.

No.' 847,191.` Specification' of Letters Patent. Patented March 12, 1907. Application filed ctober 5, 1900. Serial No. 32.123.

iguatesimilar parts, Figure 1 is a front view or my improved machine. Fig. 1a is a detail i 55 e view ota box-holder and its operating meeh- 'o au whom may concern.-

Be it known that I, WILLIAM A. LORENZ, a citizen ol" the UnitedStates, residing at '.l-Iartford, in the county of Hartlord and State of anism. Fig. 2- is a side view thereoi looking Connecticut, have invented certain new and i'rom the left ol" Fig. 1. Fig. 3 is a vertical useful Improvements in Paper Bag Masection on line 3 3, big. l. Mig. i is a similar chines, of Which the toliowing is a full, clear, section on line fl 4 l1`ig. 1. Figs; 5 to 8, inolu- 60 and exactspeci'lication. i sive, are views on an enlarged scale, lig. 5 This invention'lrelates to paper-bag mal illustrating in detail the blank-carrier and ,o chines, and more particularly to that variety l the blank-folding member coperath-'e therethereof which are employed in forming' with in a position Where the end' of the blank l l square-bottom bags 'from bellows-sided or has been opened out sul'lioiently to form the 65 tucked tubing; and it has for one of its ob- "bd-v and the inner triangular folds. Fie'. jects the provision of a machine of this char- 6 illustrates a front vie-W of the blank opened 15 acter whereby the inner triangular folds are i out as shown in Fig. 5. Big. 7 is a view simiiormed while thetucked sides oi the bellowsl lar to Fig. 5, showing the parts in a position' sided tube are distended to a certain degree, i when the diamond has been substantially 70 after which the diamond is pasted and the l completed by the coaction of the carrier and ljlaps are .subsequently ielded to complete l the folding member and after the drop-plate 2o the bag, has flattened the diamond. Iiig. 8 is a iront My invention comprises as one oi' its eai view oi' the blank corresponding to the contures a blank-folding member having a botl dition shownin Fig. 7. Fig. 9 is a vertical 75 tom-delining edge which is maintained at a l section of a machine embodying a modirica- .substantial dis tance from the blank-supportl tion of my invention. z5 ing surface of a suitableearrier or support. i In-the drawings, 10 designates abcd-plate, during the triangular-fold-formii1gperiod,the to which are secured tuto upright side frames amount et such distance or of the separation 11 and 12, in which the several cooperative 8o of the tucked tube sides depending upon the m shafts for driving the various devices are material of which the bags are to be made. supported. Suitable means are provided for 3o Another feature of my inventionmay be feeding blanks of bellows-sided tubing into found .in the. organization of tlie.'blankiol.d the machine, such means consisting in 'the ing member With its operating mechanism. present instance of suitable feed-rollers 13 3: the former being pivotally supported at a and 14, mounted on shafts 15 and 16, res 'ecpoint remote from the deiining edge and in tively, the latter oi' which is journal@ in boxes 17, movably held inthe side frames and acted upon by suitable springs 17. (See port-axis the axis itself advances also. The l Fig. 2.) The feed-rollers are caused to move particular advantage derived lfrom this or- ,together bymeans of gears 18 19, mounted ,'anization is a gaino'ltime in the operation on the shafts l5 and 16, respectively, und are 4o of' folding the diamond, this gain being due. driven by a rear 20, mounted on the lower to the fact that the delining edge is permitted roll-shaft and obtaining motion from a simito follow the movement oi' the blank-carrier lar gear 2l, carried on a shait 22, which con- 95 for a greater distance than is ossible when stitutes the main ldriving-shaft of the niathe supporting-axis of the fo ding member chine and to which power may be applied 45 has no advancing traveling movement. ln from any ordinary source. From thi` i'eedthe 'iatter case the operation of ioldimgr the l rollers a blank or tube is conducted to a suitdiamond is necessarily limited to u certain able carrier, upon which each blank is reico amount of linear travel of the blank, while in l tained during the bottom or diann'md-forinthe. present ruse the dianloud-Folding operag ing; operation.. Connected for cooperation 5o tion is continued for a longer period in the l with the carrier 1s a blank-folding member linear travel of the'blank. adapted for engaging the upper ply of the 4In thel drawings accompanying this specitube or blank, while suitable means are -proleg g5 an advancing device, so that while its deiinnu; edge nieves in an orbit around' its sup- -iicetioin and in which similar characters desl vided for holding the lower ply of the blank in placeI on the carrier, both carrier and blank-.folding member ccacting to open out the end of the blank and form the diamond, as will hereinafter appear. The carrier is in this instance of the rotary type and pivotally carries a plurality ol blank-supports, all of the supports cooperating with the s ame blank-folding member in consecutive order. The carrier 23 is secured upon a shaft 24, which receives rotary-movement through a gealr 2-5, secured thereto and in engageinent with a gear 26, mounted upon the main drivingshai"t 22, above mentioned. In order to obvia-te any interference between the blankf folding member and the blank-support S, the latter is pivotally held on the carrier 23 and is provided with an inwardlyprojecting extension (53, carrying a roller 64, which .is

adapted to travel around the periphery of a preferably stationarycam 65, while a spring 66 may serve to swing the support S inward around its pivot-support when permitted to do so by thecam 6 5. The contour of the cam G5 is. such as to position the blank-support relatively to thedeiining edge, so as to maintain the proper required distance between the defining edge 39 and the blank support S during 4the tri angular fold-forming operation. The means or devices for holding the lower. ply of the tube on the support-.i3`

consist, preferably, .of a pair of tucleholders 27, journaled'at 28 on each side ol' the blank# support and carrying cam-rollers 29,' which travel around the periphery of suitable cams 31, causing the tuck-holders to release the blank on` both sides simultaneously and at the proper time against the action of springs 3l), whereby said tuckholders are closed against the blank. The support S is also provided with a device for gripping or hold ing the front end of the lower ply of the tube or-blank, this device being shown herein as a front diamond-holder 32, journaled at 33.

A'The arm 33. of the front diamond-holder 32 carries a roll 34, in engagement with a suit* able .cam 35, whereby-as the carrier rotates said holder ,32 will be caused to release the blank at a certain time, while a spring 36 may abl .cfa plate one edge of which constitutes the'bottom-defining edge and which is mountedi-:or oscillation upon an axiswhichis car ried forward and back in the. general direc- `g tion of travel' of the blanksup ort. While ener'ally a blank-folding mem er mounted ln'accordance with my invention-viz., in a carrier which is advanceable with the blankcapriermay be advantageously employed where the blank-carrier and the defining edge travel in. close contact with eachr other duningthe working stroke. vet I consider edge of the blank-folding member and the blanlesupport during the time that they coafct in opening out the end of the blank to define the so-called inside triangular folds, so as to stretch outthe tucked sides of the tube and deine the oute)rI corners and' margins of these triangular folds at an early stage in the oscil latory movement of the blank-folding member before the Hap of the top and the bottom walls of the blank are separated far enough to put an inward strain upon the adjacent ends of the tucked sides, and thereby cause malformations of the diamond fold. In the present instance both the blank-'support and the support-axis of the foldingmember are capable of advancement, so that the dening edge will travel in unison with the blank-support during a portion of its Working stroke, while the outer end of said member may be guided in such'a manner as to cause said member to turn around its ans of support.

vThe blank-folding member 'herein shown l consists of a plate 40, having a defining edge `39 `and providedat its sides with brackets having trunnions 41, whereby said plate is pivotally supported at an axis remote from the defining-edge. an extension 4l', adapted to receive suitable Each of the brackets has i means for engaging the upper ply of the blank and for holding the same against the plate 40. The means for holding the upper' ply of the blank against the folding-plate consist in the present instance of devices -in the form of side grippers or boxeholders 42, each of which enters one of the sidetucks'- ICO of the blank and each of which is pivoted 'in passing through thesame.-` (See Fig'. la.)

The outer end of the'lilik 43 is of sp Aerical 'fornraglapted to't' a similarlyformed recess in'an, angle-lever 444, which is -pivoted at 45 to the trunnicncarrying-arms 45 v'and carries a roller 46 in engagement with a cam 47, which is .preferably'stationaryand which lserves'ro close the boxeholders against the upper ply of the blankat' the proper time, While a sprin 'such as 48, may be employed for `opening t e same. Each Aof the arms 45' is loosely and preferably eccentrically 1nounted relatively to .the axis ofthe blank-carrier,

Aas indicated in Fig. 5 and as' is also shown more clearly in Fig. 9, and both arms 45 may obtnn a properfosclllatory movement, so 'as to move in unison and to advance with the carrier by a shaft 49, journaled in bearings 50 and carrying at its outer .ends cran arms 51 5] connected by means of links 5 2.

with lugs 53, secured to or forming a part of the arms 45. One of said crank-arms--as, for lnstance, l51--may carry a roller 54, en-

gaged by a cam 55, mounted upon the main' It wlll .now -be be seen that the arms constitute sup-.

porting means by which the trunnions 41 and the folding mechanism or devices carried by said trunnions are advanced with each blank as the diamond folding operations are performed on such blank. The rear end of the folding member is preferably' supported in a pivoted guide 56, in which it may have a reciproc'atory sliding movement. The other end of the plate, forming the delining edge 39, is caused to travel in a path separated or divergent from that of the blank-support.

Interposed between the feed-rolls 13 14 and the carrier 23 is a guide-plate 57,-Whereby the blank as it is fed forward by the feedrolls will be guided withl its front end between the folding member and the blanksupport, and in order to permit such blank to avoid'the edge of the folding member as it returns. to its blank-receiving position the guide-plate 57 is movably supported near one end of a shaft 58, receivin rocking movementithrough a lever 59 an( a roll 60 from a cam 61, mounted upon the shaft 15 of the lower feed-roll 13, a spring 62 servingto keep said roller in engagement' with the cam 61.

Secured to the side frame 12 is a stud 70, on which is journaled intermediate its ends a lever 71, carrying at one end a drop-plate 72, adapted to coperate with the blanksupport S in attening and completing the diamond. The lever, 7l may be actuated by a cam 73, secured to a shaft 74 and enl aging the cam-roller 75,- journaled on the xl-)ever 71, While a spring 7 6 may be employed to force the drop-plate 72 a ainst the diamond. After the diamond as been flattened by the drop-plate the blank may be carried into contact with a presser-roll 77, mountedupon a shaft 78, after which a delivery-plate 79 may, deflect the blank from the carrier and conduct the same to other devices, which may include pasting and flapl folding devices 80 81, whereby the blank is transformed into the completed bag. Proper rotary movement maybe imparted to the shaft 78'by a gear 82, mounted upon the car- Tier-shaft 24 and driving the pinion 83,

screwed upon said shaft 78'.

In Fig. 9 I have -shown a modification of my improved machine, which in this instance includes an'oscillatory carrier instead of a rotary device, as above described. Here the carrier 100 is' provided with gear-teeth 101 in engagement with a sector 102, to which proper movement may be imparted by a cam 103 engaging a cam-roller 'ournaled on the arm 104 of the sector 102, t e latter being pivoted at 105, on the bed-plate of the machine.

The operation of my improved machine is as follows: Bellows-sided or tucked tubing is introduced into the machine by the feed-rolls' 13 14 and guided by the plate 57 between the blank-folding member 40 and the blank-support S in such a manner that the tuck-holders 27 and the front diamond-holder 32 will engage the lower ply of the blank shown in Fig. 3, and it will thus be carried along by the blank-support in the direction of the arrow. lVhile Vthe blank is delivered to the tuck-hol ders 27 the box-holders 42 of the blank-folding member 40 are o en, and the movement of the latter with the ox-holders is so timed relatively to the blank-su port that ,the front edges of 'the tuck-hol ers and of the boxholders will be in alinement with each other when they grip the blank, after which both the blank-sup ort and the defining edge of the blank-fol ing member Will travel in unison during the formation -of the diamond. In Fig. 6 the endof the tucked tube is shown o 'cned out into what is generally known as t ie box form]7 clearly illustrating themanner of form'n the inside triangular folds, and in Fig. 7 the lank-foldmg member is shown as having arrived at the end of its 'stroke and showin the dro -plate in its operative posi- IOO tion su stantial y completing thediamond.

'the drop-platef/'l and carried into contact with the resser-roll. The front diamondholder an( the tuck-holders then release the blank, which is then deflected by the plate 79 toward the pasting and Hap-folding devices, whereby the bag is. completed.

`It is evident that changes may be made in the particular construction of solne of the elements of my improved machine without de arting from the gist of my invention.

W rile I have shown and described the bl ankfolding member cooperative with 'a rotary blank-carrier, it should be understood that other forms of carrier may be substituted therefor.

In my prior application', Serial No. 27,86 i filed August 23, 1900, I have shown, dcscribed, and claimed certain combinations shown and described -but not claimed in this application. S

ows novel features in common with said prior application 1t 1s to be regarded as subordinate to said prior application.

In so far as this application `idvance movement of the blank-fo ding member, and of its supporting means, with the blank-support, andimeans independent of andl extraneous to the blank-support for oscillatingsaid member in its support. i

2. 'lhe combination, Witham'ovab'le blank- 'supportg of anI oscillatory blank-folding e; means for member having a. defining eder on an axis pivot/ally supporting said mem remote from' the edge; means for 'oscillating the definin duri-'ng the ormation of the inner triangular` said member in: its support;and means for advancing the pivot'- support ofthe folding member with the blank-support dpring the diamond-forming operation.

3. The combinationwith a movable. blank-- Support, of tuckholders, a blank -folding member having a defining edge, means for supporting said member for oscillation upon an axis remote from said edge, means for moving-- the Ablank-folding member forward inl the general direction of movement of the blank-support, means for oscillating-v said. member on its axial support, and means forl moving the' blank-support to effect a substantial separation between the defining edge and the blank-support during the formation of the inner triangular folds. f

4, The eombinationwith a movable blanksupport, of tuck-holders, a blank -folding member having a defining edge, means for supporting said member for oscillation-on an axis remote'f'rom said'edge, means? for oscillating said member -onits axial support, means "for advancing the said axial support' in'. the

general direction vof travel of the blank-support during the diamond-forming operati on,

and-means for moving the blank-support to' effectV a substantial se aration between edge and t' e blanke support folds. l 5. The combination with a movable ca ri er having a relatively movable blank-sup- ,l memberhaving box-holders and a defining edge; means for pivotally supporting said g member on an axis remote from the defining l edge; means for oscillating said member in its support; and means for moving the pivl otal support of the folding member forward l relative to the direction of movement of the blank-support during the diamond-forming operation. i 7. The combination, with a movable blank-carrier, of a movable blank-support l controlled by the movement of the carrier, and having tuck-holders, an oscillatory blank-folding member having box-holders .and a defining. edge, means for pivotally supl porting said folding member on an axis rel mote from its defining edge, means for oscillating said folding member in its support, and means for moving the pivotal support of the folding member forward relative tothe direction of travel of the blank-support, during the blank-folding operation. i

8. The combination, with a blank-support having tuck-holders; of an oscillatory blankfolding member cooperative therewith and having a defining edge and box-holders: means for pivotally supporting said .member on an axis remote from the defining edge; and a pivoted guide for guiding the oscillatory movement of said member.

9.' The combination with a movable blankblank-folding member cooperative with the blank-support, and having a defining edge and box-holders, arms mounted for oscillation and. supporting said member for oscilla.- tion on an axis remote from the defining edge, and a pivot-guide' for guiding the'oscillatory movement ofthe folding member.

mounted carrier and'amovable support havingr tuck-holders, of anoscillatory bl ank-foldport, and having a defining edge and -boxholders, arms mounted for oscillation on an axis which is iti-eccentric relation to the axis of the carrier, and supporting the folding l member for oscillation upon an axis remote from the defining edge, means for oscillating the arms, and a pivoted guide for guiding the oscillating movementI of the blank-folding member. I

10. The ncombination with. an axiallyling member cooperative with the `blanksup ort, of'tuck-holders, ablank-fo'lding member I* .triangular folds, and means for advancing the aving a defining' edge, means for supporting 11. The combination with an axiallysaid 'member for oscillation .on an axis re- 1 mounted carrier, and a movable blank-supmote from the defining edge, means for oseilport having tuck-holderarof a cooperating. lating the-said member in-its support, means blank-folding member havinga defining edge for moving and positioning said blank-s'up- Q and box-holders, arms mounted for oscillaport at a substantial distance from the defini tion upon an axiseccentricto that of the caring edge during the formation lof the Yinner l rier, and supporting the said foldmg member for oscillation on an axis remote from the deaxial sup' ortrelative to the direct-ion of fining edge, acam for moving the said armsfortravel of t e blank-support. Ward relative to the directlon ofr travel of the 6.; The combination. iWith a movable carl carrier, and means for guidingthe oscillatory rier; and a movable blank-sup ort having i movement of the folding member. e tuck-holders; of an oscillatory b ank-folding l 12. Theoombination with a blank-carrier support having tuck-holders, lof an oscillatory IOC) rio

having a relatively movable blank-support, of tut-k-l'iolclers, an oscillatory folding member cor'iperative with the blank-sup ort and -edge and the movab e support during the folding operation.

13. The combination with a movable carrier, of a blank-support having tuck-holders, and movably supported on said carrier, a blank-folding member having a defining edge and box-holders, movable means supporting the blank-folding member for oscillation, and a cam for moving the bl ank-support in a path p separated from that of the defining edge of the folding member during the operation of forming the inner triangular foldsA 14. The Combination with a movable carrier, of a movable bl ank-support having .tuckholders, a blank-folding plate having a delining edge and box-holders cooperative therewith, means for supporting said plate for oscillation upon an axis remote from said defining edge, means for guiding the oscillatory movement of said plate, and means for guiding the blank-support at a substantial distance f'rom the defining edge during the formation of the inner triangular folds.

1 5. The combination, with a rotary car,- rier having a blank-support; and tuckholders coperative therewith; of an oscillatory blank-folding member having boxholders; means for operating the box-holders comprising a link having its axis substantially coincident with the 4axis of support of the folding member and means for operating said link.

16. The combination, witha'rotary blankcarrier having a blank-support; and tuckholders coperative therewith; of an oscillatory blank-foldingl 'member having boxi holders means for operating the box-holders and connected to said lever by a 'universaljoint; and means for operating said lever.

1S. In a bag-machine, mechanism for forming diamond folds on bellows-sided blanks, including in combination a rotary finding-bod, tuck-holders, an arm, means for moving,r said arm with the bed during the folding o eration on a blank, a hollow shaft journaledu on said arm, folding mechanism including a box-holder mounted on said shaft, means for turning said shaft relative to said arm as the latter moves with the bed, and means for opening and closing said boxholder, including a lever sup )orteil on said arm, a link connecting said fever and boxholder, and cam mechanism for oscillating said lever as said arm moves with. the bed.

19, In a bag-machine, mechanism for forming diamond folds on bellows-folded blanks, having in combination a rotary folding-bed, means for holding the lower ply' of the bag-blank to the folding-'bed oscil atingA i arms movingl about a center of oscillation located within the rotary path of the bed, cam mechanism foroscillating tho arms, located outside of the rotary path o f the bed, and connected. to the arm by connecting-rods, folding mechanism moved by said arms through ali-oscillatory pathiabove the rotary bed, and means for operating the folding mechanism to open theblanks during their movement with the bed.

20: In a bag-machine, mechanism .for forming diamond folds on bellows-folded blanks, having in combination aV rotary carrier, a blank-support mounted for oscillation upon and for revolution with the carrier, the blank-support being provided with means for engaging the lower ply of the bellowsfolded blank, and folding mechanism mountedfor oscillation upon an axis situated within the path of revolution of the blank-support; and also mounted for oscillation upon an axis situated butside of that path of revolution.

21,- In a bag-machine, mechanism for forming diamond folds on bellows-folded blanks, havingI in combination a rotary carrier, a blank-support mounted for oscillation upon and for revolution with the carrier, and provided with devices for engaging the lower ply of the bellows-foldedblank, .oscillating arms moving about a center of'oscifllation located within the path-of revolution of the blank-support, folding mechanism mountedfor oscillation upon the said arms upon an axis situated outside of the said path of revolution, and including devices for engaging and turning back the upper ply of 'tire blank as it is carried forward by the blank-support.

22, In' a bag-machine, mechanism for forming diamond folds on bellows-folded blanks, having' in combination a rotlje car.-

rier, a folding-bed mounted for oscilllaiion,

upon and for revolution with the said carrier,

provided with a diamond-holder 342 and tuck-v holders 27 for engaging the lower ply of the bellows-folded blank, arms supported for oscillation upon an axis located Within the path of revolution of the blank-support, and folding mechanism mounted for oscillation upon the said arms upon an axis situated outside of the said path of revolution, and

' advancing` provided with box-holders 42 for engaginhr and turning back tlie'upper ply of the blank to form the dia-mond folds. l

23. In combination with a movable blankearrier having tuck-holders and With an oscillatory blank-folding member having a dening edge and box-holders, of supporting means pivotallyl supporting said member at a point remote from said edge Vand movable transversely of and also carrier.

24. The combination, having tuck-holders, of an oscillatory blankfolding' member having a defining edge and box-holders, said member being pivoted at an axis remote from said edge, a earriersupporting the. blank-folding member, and for moving the pivot-axis of said member away from and' toward the blank-carrier, and means independent of the blank-carrier for said pivot-axis with ythe blankcarrier during the diamend-forminxgrv operation.

25. The combination, Withva rotary blanke'arrier having tuck-liolders, of an oscillatory i blank-folding member lia-ving' a defining' edge and box-holders, said member being vpivoted at an axis remote from dependent of said said edge, means inpivot transversely relatively to and also with the blank-carrier during the diamond-v 'formin operation.

he combination, with a movable blank-carrier having tuck-holders, of an os- With the Ablankwith a blank-carrier the blank-carrier for movingI I eillatory blank-folding;r member having a de- .ining edge and box-holders, said member l beingl pivoted at an axis remote from said edge', a movable carrier supportingr the blanki folding member, means for oscillating said l member in its earrier, and a cam-operated l actuator for advancing said farrier with the {blank-carrier during the diamond-forming l operation. mechanism for j folds on bellows-'sidedblanks, includingr in combination a rotary l folding-bed, means for securing a bag-blank thereon, an arm, lmeans fonoscillating said 27. In a bag-machine, :forming diamond rotary path or' the folding-bed, a hollow shaft iournaled insaid arm, folding' mec-lianism supported by y member for engaging filie outer surfer-e of the upper ply of tbe blank) and a cooperating grippingI device entering the side tuck of the lank, means ior causing said device and member to approaeli and separate from each other to grip and release the portion of the blanky between them, said last-mentioned means including a lever pivotall)Y supported on said arm and a eo peratinr member located in said hollow shaft, turningr said shaft relative lat-ter oscillates.

Afi-"llQLIAM A. LORENZ.

to said armas the Witnesses Omas. F. SCHMELZ, JAS. DANGERFIELD.

i i l said arm and including arm about a center of oscillation'Within the and ine-ans for 

